Crash on UE_4.15 OSX

[DavidOldAccount]

It crashes when I launch the game, and here's the log:
LoginId:2cb65646f14b423c73521780803f17ea
EpicAccountId:9450efd4cdac4f64987a484e169cb58a

#0 at 0x7fff98f40f06

__pthread_kill Address = 0x7fff98f40f06 (filename not found) [in libsystem_kernel.dylib]
abort Address = 0x7fff9fd966df (filename not found) [in libsystem_c.dylib]
basename Address = 0x7fff9fd5ddd8 (filename not found) [in libsystem_c.dylib]
MTLReportFailure Address = 0x7fff9767d7ad (filename not found) [in Metal]
validateVertexAttribute(MTLVertexBufferLayoutDescriptorInternal const&, int, MTLVertexAttributeDescriptorInternal const&) Address = 0x7fff97684754 (filename not found) [in Metal]
-[MTLVertexDescriptorInternal validateWithVertexFunction:error:] Address = 0x7fff97684bb1 (filename not found) [in Metal]
-[MTLRenderPipelineDescriptorInternal newSerializedVertexDataWithFlags:error:] Address = 0x7fff9767cfe7 (filename not found) [in Metal]
-[MTLCompiler newRenderPipelineStateWithDescriptor:options:reflection:error:completionHandler:] Address = 0x7fff97670d5e (filename not found) [in Metal]
-[_MTLDevice newRenderPipelineStateWithDescriptor:error:] Address = 0x7fff9765e9fd (filename not found) [in Metal]
FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState(FMetalBoundShaderState*, FMetalHashedVertexDescriptor const&) const Address = 0x144bae2c3 (filename not found) [in UE4Editor-MetalRHI.dylib]
FMetalBoundShaderState::PrepareToDraw(FMetalHashedVertexDescriptor const&, FMetalRenderPipelineDesc const&) Address = 0x144b93890 (filename not found) [in UE4Editor-MetalRHI.dylib]
FMetalContext::PrepareToDraw(unsigned int, EMetalIndexType) Address = 0x144b8dbf1 (filename not found) [in UE4Editor-MetalRHI.dylib]
FMetalRHICommandContext::RHIDrawIndexedPrimitive(FRHIIndexBuffer*, unsigned int, int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int) Address = 0x144b74a36 (filename not found) [in UE4Editor-MetalRHI.dylib]
FMeshDrawingPolicy::DrawMesh(FRHICommandList&, FMeshBatch const&, int, bool) const Address = 0x11d3bb7b3 (filename not found) [in UE4Editor-Renderer.dylib]
int TStaticMeshDrawList<TBasePassDrawingPolicy >::DrawElement<(InstancedStereoPolicy)2>(FRHICommandList&, FViewInfo const&, FMeshDrawingPolicy::ContextDataType, FDrawingPolicyRenderState&, TStaticMeshDrawList<TBasePassDrawingPolicy >::FElement const&, unsigned long long, TStaticMeshDrawList<TBasePassDrawingPolicy >::FDrawingPolicyLink*, bool&) Address = 0x11d293d88 (filename not found) [in UE4Editor-Renderer.dylib]
bool TStaticMeshDrawList<TBasePassDrawingPolicy >::DrawVisibleInner<(InstancedStereoPolicy)2>(FRHICommandList&, FViewInfo const&, FMeshDrawingPolicy::ContextDataType, FDrawingPolicyRenderState&, TBitArray const*, TArray<unsigned long long, SceneRenderingAllocator> const*, StereoPair const*, int, int, bool) Address = 0x11d293113 (filename not found) [in UE4Editor-Renderer.dylib]
FDeferredShadingSceneRenderer::RenderBasePassStaticDataType(FRHICommandList&, FViewInfo&, FDrawingPolicyRenderState const&, EBasePassDrawListType) Address = 0x11d1fca77 (filename not found) [in UE4Editor-Renderer.dylib]
FDeferredShadingSceneRenderer::RenderBasePassStaticData(FRHICommandList&, FViewInfo&, FDrawingPolicyRenderState const&) Address = 0x11d1ffbc5 (filename not found) [in UE4Editor-Renderer.dylib]
FDeferredShadingSceneRenderer::RenderBasePassView(FRHICommandListImmediate&, FViewInfo&) Address = 0x11d1fc7a3 (filename not found) [in UE4Editor-Renderer.dylib]
FDeferredShadingSceneRenderer::RenderBasePass(FRHICommandListImmediate&) Address = 0x11d1fbd2e (filename not found) [in UE4Editor-Renderer.dylib]
FDeferredShadingSceneRenderer::Render(FRHICommandListImmediate&) Address = 0x11d2e353c (filename not found) [in UE4Editor-Renderer.dylib]
FRendererModule::BeginRenderingViewFamily(FCanvas*, FSceneViewFamily*)::EURCMacro_FDrawSceneCommand::DoTask(ENamedThreads::Type, TRefCountPtr const&) Address = 0x11d88cd10 (filename not found) [in UE4Editor-Renderer.dylib]
TGraphTask<FRendererModule::BeginRenderingViewFamily(FCanvas*, FSceneViewFamily*)::EURCMacro_FDrawSceneCommand>::ExecuteTask(TArray<FBaseGraphTask*, FDefaultAllocator>&, ENamedThreads::Type) Address = 0x11d8ff3eb (filename not found) [in UE4Editor-Renderer.dylib]
FNamedTaskThread::ProcessTasksNamedThread(int, bool) Address = 0x10d4c2571 (filename not found) [in UE4Editor-Core.dylib]
FNamedTaskThread::ProcessTasksUntilQuit(int) Address = 0x10d4be015 (filename not found) [in UE4Editor-Core.dylib]
FTaskGraphImplementation::ProcessThreadUntilRequestReturn(ENamedThreads::Type) Address = 0x10d4ba891 (filename not found) [in UE4Editor-Core.dylib]
RenderingThreadMain(FEvent*) Address = 0x1133d83d4 (filename not found) [in UE4Editor-RenderCore.dylib]
FRenderingThread::Run() Address = 0x1133ebb97 (filename not found) [in UE4Editor-RenderCore.dylib]
FRunnableThreadPThread::Run() Address = 0x10d51acb3 (filename not found) [in UE4Editor-Core.dylib]
FRunnableThreadPThread::_ThreadProc(void*) Address = 0x10d4dcee1 (filename not found) [in UE4Editor-Core.dylib]
_pthread_body Address = 0x7fff92eff99d (filename not found) [in libsystem_pthread.dylib]
_pthread_body Address = 0x7fff92eff91a (filename not found) [in libsystem_pthread.dylib]
thread_start Address = 0x7fff92efd351 (filename not found) [in libsystem_pthread.dylib]

[AndrewScheidecker]

I can't test on OSX easily, but this is most likely due to the MetalRHI not supporting vertex streams with a stride of zero: https://github.com/EpicGames/UnrealEngine/blob/release/Engine/Source/Runtime/Apple/MetalRHI/Private/MetalRenderPipelineDesc.cpp#L289

It's possible that this can be fixed by changing UE4's MetalRHI to pass the zero-stride vertex stream to the Metal API. It's not clear from that code why it doesn't initialize the layout descriptor if the stride is zero.

[DavidOldAccount]

Well, this is kind of unachievable for a noob like me.....
Can you please tell me more details of how the source code should be modified?
If not, I'll try to run this project in a virtual machine instead.

[DavidOldAccount]

I implemented a voxel terrain generation system, which encompasses infinite terrain, mining, block rotation & stretch and primitive ai on my own: https://cplusplusgametricks.wordpress.com/
BUT It would be cool if you can solve this osx issue

[miguelemosreverte]

That's really cool! The AI especially, that's something I dreamed of doing. Cool stuff right there.

:)

[DavidOldAccount]

Thank you for your compliment :D I actually plan to release my project on github: https://github.com/NewDavidg0/Voxel-survival-primitive-UE4

[miguelemosreverte]

Did you use Scheidecker's voxel implementation or did you roll out your own solution?

Again, congrats for your hard work. Check WesterosCraft if you want to join a big team!

[DavidOldAccount]

Honestly, I tried to "steal" some ideas from brickgame in my very early stage of development, but I gave up because of brickgame's complexity and eventually implemented a blueprint-pure voxel project :D
Surprise! I'm already in the westeroscraft team, but I haven't joined the development yet because of my end-term test